随机粗糙面及其上方多个导体目标复合电磁散射的FE/BIM方法

his work presents a hybrid finite element-boundary integral method (FE/BIM) to solve the problem of scattering from multiple targets above the rough surface. Based on the domain decomposition technology, the solution region is divided into multiple isolate interior regions for each object and the region exterior to all the interior regions. In this paper, the conformal artificial boundaries are introduced, which can reduce the computed region extremely. For the fields in the multiple isolate interior regions, finite element method is used to solve the scattering problem respectively, whereas the coupled interaction among isolate regions can be taken into account by integral boundary conditions. The hybrid technique presented here is versatile to arbitrary targets above the rough surface, and accurate in comparison with the method of moment (MoM). Properties of the bistatic scattering from multiple targets above the rough surface under different conditions are discussed in detail.